Add hasBinders() to Bundle

This is an extension to the existing `hasFileDescriptors` method, with
the exception that we do not support this check in cases where the
Bundle data is modified after unparcelling.

Test: will add unit tests after initial review
Bug: 326032074

Change-Id: Ide1b61aa9cb792facc042f2c03017bcfbde0921b
2 files changed